private void buttonRemoveProject_Click(object sender, RoutedEventArgs e)
 {
     // Item must be selected
     if (listBoxProjects.SelectedItem != null)
     {
         int index = listBoxProjects.SelectedIndex;
         // Display warning
         MessageBoxResult messageBoxResult = MessageBox.Show(string.Format("Do you want to remove project {0}", projects[index].ProjectName), "Warning", MessageBoxButton.YesNo);
         if (messageBoxResult == MessageBoxResult.Yes)
         {
             // Remove for list and update GUI
             projectMgr.DeleteAt(index);
             UpdateGUI();
         }
     }
 }